Permutation-padlock



( No Model.)

H. 0,, LOWRIE. PERMUTATION PADLOGK.

N0. 502,308. Patented Aug. 1, 1893 in side, bottom,and top views.

NIT-ED STATES PATENT OFFICE.

HARVEY O. LOWRIE, OF DENVEIQCOLORADO.

PERMUTATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 502,308, dated August1, 1893.

Application filed September 29, 1892. fierial No. 447,328. (No model.)

To all whom it may concern..- 7

Be it known that I, HARVEY O. LOWRIE, of Denver,-in the countyofArapahoe and State of Colorado, have invented certain new and usefulImprovements in Permutation -Padlocks; and I do hereby declare that thefollowing specification, taken in connection with the drawings furnishedand forming-a part of the same, is a clear, true, and completedescription of my invention.

The object of my invention is to produce a simple, efficient andinexpensive permutation padlock, having a rotative annular hasp, and tothat end I have devised a lock in which appropriately marked workingrings control a central slidable locking bolt which engages with anannular hasp, which may be either a ring which is solid, except as toprovidingfor a limited shackle opening, or a hinged ring, composed oftwo or more parts which may be widely opened to afford an extensiveshackling capacity.

To more particularly describe my invention I will refer to theaccompanying drawings, and after a detailed description of the looksillustrated, the several features deemed novel will be duly specified inappropriate clauses of claim hereunto annexed.

Figure 1, in side view illustrates one form of my lock having a rotativeannular hasp, in one piece, and with the hasp open, and in condition toreceive chain links, rings or staples. Fig. 2, is a central sectionalview of the lock, Fig. 1. Fig. 3, in side, top, and sectional viewsillustrates one of the counterpart work ing rings. Fig. 4, illustratesin side view and section, a central tube on which the working rings areaxially mounted. Fig. 5, illustrates the bolt of the lock and itslocking lugs. Fig. 6, illustrates the cap plate of the lock, Fig. 1,

Fig. 7,in section illustrates the upper portion of a look similar to thelock Fig. 1, but with a hasp arranged to afford a wider entrance to theshackling eye. Fig. 8, in section illustrates the upper portion of alock, difiering from those previously shown, in the construction of thebolt head, as Well as of the hasp, the latter being rotative as beforebut sectional and adapted to afford an extraordinary opening into theshackling eye.

Within the body of the look there is a centraltube a, Fig. 4, which hasa base plate 0., and a longitudinal slot a and also an opening in thecenter of the base plate ata The provided with many more clearly definedletters, each with its registering line mark,than could have been placedthereon if a single row of letters of the same size had been used. Theinner ring I) is notched at one side as at b ,-and it occupies anannular recess in the outer ring at one side thereof. These two rings,as is common in permutationlocks, are normally united, but capable ofseparation and readjustment in the usual manner for readily enablingmany changes in permutation. It is to be understood that the workingrings can be separated if desired, by means of fixed Washers in theusual manner. The bolt 0 is longitudinally slidable and has a stem 0shouldered near its outer end, where it abuts against the base plate aand it also has a grasping eye or handle 0 it is also provided withafixed sleeve dhaving radial looking lugs cl, d, d, to correspond withthe working rings 12, b, b, said lugs in each case occupying thelongitudinal slot a of the central tubea. It is not essential that thelocking lugs should thus be carried by the bolt as by way of a sleeve,if, for instance, the handle of the bolt be separately constructed andsecurely applied, in which case the locking lugs d may be eitherinserted into or be integral with the bolt, thus avoiding the use ofascrew in or at the head of the bolt for confining a sleeve thereon.

Between the bottom of the central tube a, and the adjacent end of thesleeve d there is a spiral spring 6 surrounding the bolt stem 0' forforcing the bolt longitudinally from its unlocked position into itslocki-ng position.

In the look A, Fig. 1, the hasp fis in one piece annular, and round incross section, and has a shackle opening f, which can, by rotation ofthe hasp, be placed in line with the bolt and serve as a gatingtherefor, or when released from its locked position by the bolt, it canbe readily rotated and exposed outside of its housingin the cap plate g,which isprovided with a curved gating, correspondingin contour with thehasp, so that thelatter may be freely rotated. The cap plate g maybemade solidly, or constructed in two halves, riveted together, but whensolid the hasp isinserted before it is fully bent into form. The head 0of the bolt, corresponds in dimensions with the openingf in the hasp,and confines the latter against rotation.

It will be readily understood that when the several notches in theworking rings are made to register with each other, and also with theslot a in the central tube, the bolt can be withdrawn against its springby means of its handle, and the hasp thereby released for retation; andalso that when the hasp is again returned to proper position, the boltwill be projected into locking engagement with the hasp, and secured inthat position by deranging the locking rings.

lVith the haspfthe entrance to theshackling eye in the hasp is limitedto the width of the gatingf, and this is restricted to the correspondingdimensions of the bolt head, but for affording a wider entrance to theeye, the bolt head being as before described, should have its ownspecial notch to engage with, independently of the opening to the eye,as illustrated in the look A, which is partly shown in Fig. 7. In thiscase the cap plate g has an extended tubular projection at one side asat g and the hasp f has a wide opening or gating at f for affording theintroduction of large links or a large staple as is sometimes desirable.This hasp has a head at j, which by abutting against a shoulder in thecap plate, restricts the hasp to rotation in one direction. At one sideof the opening f the hasp is provided with a locking notch f whichserves as a gating for and is occupied by the bolt head 0 as in the lookA. i

For affording a still wider opening or gating into theshackling eye orspace inclosed by the hasp, the latter is constructed in two or moreparts, properly hinged together, and the bolt is organized not only soas to prevent the rotation of the hasp as in the looks alreadydescribed, but it also binds the two free ends of the hasp into firmlocking relations. Such a lock is illustrated in Fig. 8.

This look A has a cap plate 9 substantially like that in the look A, butthe hasp f is constructed in three parts, strongly hinged together, asat f, f, the joints being such as to restrict the parts to one plane,and not to impair its annular form, or its capacity for rotation, butits cross section may be either square or circular.

The two ends of the hasp abut closely with each other and each has agating space atfordin g a locking shoulder f f so that both of saidshoulders may be embraced after the manner of a tenon, by the mortisedhead 0 of the bolt 0, which therefore not only confines the hasp againstrotation, but also firmly binds or looks the two ends of the haspagainst displacement. It will be seen that when this hasp has beenrotated. until both of its ends are free from the cap plate, they may beswung outwardly as indicated in dotted lines. lVith this form of haspthe cap plate may be a solid structure, the rivetingat f being doneafter inserting the hasp.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent- 1. In a permutation padlock, the combination withappropriately marked working rings, and a slidable spring actuated bolt,controlled by said rings, and confined by them in its locked position,of an annular hasp, rotative in the cap plate of the lock, and providedwith a gating with which the head of the bolt engages, and also with anexternal handle by which the bolt maybe retracted after the workingrings have been properly adjusted.

2. In a permutation padlock, the combination substantially ashereinbefore described, of a series of appropriately marked workingrings; a central longitudinally slotted tube concentric with said ringsand serving as their axial support, and provided with acap plate and abase plate; aslidable bolt-within the tube, but projecting through thebase plate, and carrying a series of locking lugs which occupy the slotin the central tube, and are controlled by the working rings; a springfor projecting said bolt from its unlocked to its locked position; andan annular hasp, rotative in the cap plate, provided with an openingintoits central space or shaekling eye, and also with looking shoulders withwhich the bolt head engages.

3. In a permutation lock, working rings having on their peripheriesseparate rows of markings, as by letters or numerals, the letters ornumerals in one row being ottset with relation to adjacent letters inthe adjacent row, and each letter having its own registering line, asand for the purposes specified.

HARVEY O. LOW'RIE.

Witnesses:

CORNELIUS FERRIs, R. N. KNOWLES.

